99858859 has 2 divisors, whose sum is σ = 99858860. Its totient is φ = 99858858.

The previous prime is 99858827. The next prime is 99858911. The reversal of 99858859 is 95885899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99858859 - 2⁵ = 99858827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99858797 and 99858806.

It is not a weakly prime, because it can be changed into another prime (99858259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49929429 + 49929430.

It is an arithmetic number, because the mean of its divisors is an integer number (49929430).

Almost surely, 2^99858859 is an apocalyptic number.

99858859 is a deficient number, since it is larger than the sum of its proper divisors (1).

99858859 is an equidigital number, since it uses as much as digits as its factorization.

99858859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 61.

The square root of 99858859 is about 9992.9404581434. The cubic root of 99858859 is about 463.9404077129.

The spelling of 99858859 in words is "ninety-nine million, eight hundred fifty-eight thousand, eight hundred fifty-nine".